26 lines
639 B
Plaintext
26 lines
639 B
Plaintext
## Serial Interface
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Instead of polling for input we use an interrupt vector
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to write data to a rx ring buffer when it's available.
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We parse commands using a state machine so we can deal
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with small chunks of characters at a time and spit out
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the parsed command when the transmission has finished.
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TODO: System clock frequency should be a multiple of
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1.8432MHz for perfect USART. This means we would need
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an external crystal oscillator.
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TODO: Do we need to handle backspaces for interactive
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serial consoles?! Overkill?!
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### Supported Commands
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Optional decimal point for numbers.
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- START
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- RESET
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- STOP
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- SET TEMP 20.0
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- SET DEWP 60.0
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